trains is a list that contains information about trains associated with a station stn. Specifically, each element in this list is a pair: [Arrival, Departure]. If the arrival or departure time is empty, it is represented as "None". 1 flag1 = False, flag2 = True 2 count = 0 3 foreach x in trains{ 4 if(first(x) == "None" or last(x) == "None"){ 5 flag1 = True 6 } 7 else{ 8 count = count + 1 9 } 10 } 11 if(count == length(trains)){ 12 flag2 = False 13 } Based on the above data, answer the given subquestions. What does the variable count represent at the end of execution of the given pseudocode?

(D) It is the number of trains for which stn is neither a starting nor an ending station

(A) It is the number of trains associated with stn

(B) It is the number of trains for which stn is a starting station

(C) It is the number of trains for which stn is an ending station

Computational Thinking · End Term · 30 Apr 2023 · January 2023 term · Set QPF1-S2

Question 19: trains is a list that contains information about trains …

Question 19

+3 marksOne correct option

trains is a list that contains information about trains associated with a station stn. Specifically, each element in this list is a pair: [Arrival, Departure]. If the arrival or departure time is empty, it is represented as "None".

text

1 1  flag1 = False, flag2 = True
2 2  count = 0
3 3  foreach x in trains{
4 4      if(first(x) == "None" or last(x) == "None"){
5 5          flag1 = True
6 6      }
7 7      else{
8 8          count = count + 1
9 9      }
1010  }
1111  if(count == length(trains)){
1212      flag2 = False
1313  }

Based on the above data, answer the given subquestions.

What does the variable count represent at the end of execution of the given pseudocode?

A
It is the number of trains associated with stn
B
It is the number of trains for which stn is a starting station
C
It is the number of trains for which stn is an ending station
D
It is the number of trains for which stn is neither a starting nor an ending station

Show answer

Correct answer

D
It is the number of trains for which stn is neither a starting nor an ending station

See the whole paper Take it as a mock test

Question 19 of 25 in the IIT Madras BS Computational Thinking (Computational Thinking (CT)) End Term paper sat on 30 Apr 2023, in the January 2023 term (IIT M FOUNDATION ET1 EXAM QPF1 S2 30 Apr 2023). It carries 3 marks.

Question 19: trains is a list that contains information about trains …

Question 19

More questions from this paper